Nice re-purposing of spare parts, Rick. Very realistic looking scene. I know its just an optical delusion, but the slab in the first (model) picture looks like it has a rounded surface. The A-frame hoist appears as if it is going to roll off to the left.

Well, Rick, you just got yourself some high praise. My dining room table has the start of this same project in the form of the cab off a shay. I showed your work here to my youngest son, and he says, "You snooze you lose. Don't bother starting, Dad, you won't do any better than that." (Meaning your shed.)